452 lines
16 KiB
TypeScript
452 lines
16 KiB
TypeScript
"use client";
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/**
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* PostScrollCard — Instagram-style post used on the scroll feed.
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*
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* Layout:
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*
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* ┌───────────────────────────────────────┐
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* │ ◯ name @handle ⋮ │ ← author header (TBD)
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* ├───────────────────────────────────────┤
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* │ │
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* │ image carousel │ ← square, swipeable
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* │ (or quote) │ (no-image variant
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* │ │ fills with gradient
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* │ • ○ ○ ○ │ panel + serif quote)
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* ├───────────────────────────────────────┤
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* │ "Quoted passage shown as caption…" │ ← truncates with "more"
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* │ ŚRĪMAD-BHĀGAVATAM — CANTO 4, CH 5 │ ← citation
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* └───────────────────────────────────────┘
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*
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* • Multi-image carousel uses native CSS scroll-snap with dot indicators
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* below; the same primitive CollectionScrollCard uses for posts.
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* • Long captions clamp to 3 lines until the user expands via "more".
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* • Owner action cluster (Update background / Delete) sits in the
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* top-right of the media area, fading in on hover (desktop) and
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* always visible on touch (mobile).
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*/
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import { useEffect, useRef, useState } from "react";
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import Image from "next/image";
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import Link from "next/link";
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import { AtSign, ImageIcon, Repeat2 } from "lucide-react";
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import { cn } from "@/lib/utils";
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import type { Post, PostImage } from "@/lib/social";
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import { displaySourceLabel } from "@/lib/source-reference";
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import { timeAgo } from "@/lib/time";
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import { useMediaQuery } from "@/components/selection-toolbar/shared";
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import { UserAvatar } from "@/components/ui/user-avatar";
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import { useAuth } from "@/components/auth/auth-provider";
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import { postSourceHref, quoteCardBgStyle } from "./post-card-shared";
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import { PostActionsFooter } from "./post-actions-footer";
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import { PostCardMenu } from "./post-card-menu";
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import { PostImageLightbox } from "./post-image-lightbox";
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import { useTapGuard } from "./use-tap-guard";
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import { FeedFollowButton } from "./feed-follow-button";
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import { UpdateBackgroundModal } from "../update-background-modal";
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import { MentionsDrawer } from "../mentions-drawer";
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export function PostScrollCard({
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post,
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onDelete,
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onUpdated,
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onHiddenChange,
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enableFollow = false,
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}: {
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post: Post;
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onDelete?: (id: string) => void;
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onUpdated?: (updated: Post) => void;
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/** Owner-only: forwarded to the overflow menu so a parent can react to a
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* hide/unhide (e.g. drop the post from the Hidden tab on unhide). */
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onHiddenChange?: (id: string, hidden: boolean) => void;
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/** Home-feed only: show a Follow / Follow back button in the header for
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* authors the viewer doesn't already follow. Off everywhere else. */
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enableFollow?: boolean;
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}) {
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const images = post.images ?? [];
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const hasImages = images.length > 0;
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const sourceHref = postSourceHref(post);
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const isMobile = useMediaQuery("(max-width: 767px)");
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const { user } = useAuth();
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const isAuthor = !!user && user.id === post.user_id;
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const [bgModal, setBgModal] = useState(false);
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// Which attached photo the full-screen viewer is showing (null = closed).
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const [lightboxIndex, setLightboxIndex] = useState<number | null>(null);
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const [expanded, setExpanded] = useState(false);
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const [mentionsOpen, setMentionsOpen] = useState(false);
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// Live mention count — seeded from the hydrated post, adjusted when the
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// author edits tags in the drawer, so the icon appears/disappears in place.
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const [mentionCount, setMentionCount] = useState(post.mentions_count ?? 0);
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// The author always gets the mentions entry point (to add/remove); everyone
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// else sees it only when the post actually tags someone.
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const showMentions = mentionCount > 0 || isAuthor;
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// Top-right media overlay: a Mentions icon and the owner-only
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// Update-background button. Delete lives in the header menu.
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const topRight =
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showMentions || onUpdated ? (
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<div className="absolute top-3 right-3 z-10 flex items-center gap-2">
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{showMentions ? (
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<OwnerButton
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label="See who's mentioned"
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onClick={() => setMentionsOpen(true)}
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icon={<AtSign className="size-4" />}
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/>
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) : null}
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{onUpdated ? (
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<OwnerButton
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label="Update background"
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onClick={() => setBgModal(true)}
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icon={<ImageIcon className="size-4" />}
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/>
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) : null}
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</div>
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) : null;
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return (
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<article
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id={`post-${post.id}`}
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className="rounded-2xl overflow-hidden bg-card ring-1 ring-foreground/10 scroll-mt-20 sm:scroll-mt-24 select-none"
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>
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{/* Reshare attribution — only on rows that are themselves
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reshares. Tappable link → original author's profile. The card
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body below shows the resharer as the author (this row IS the
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resharer's own post — likes, comments, background all belong
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to them, decoupled from the original). */}
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{post.reshared_from_post_id && post.original_author_handle ? (
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<Link
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href={`/u/${post.original_author_handle}`}
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className="inline-flex items-center gap-1.5 px-4 pt-3 text-xs text-muted-foreground hover:text-foreground transition-colors"
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>
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<Repeat2 className="size-3.5" />
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<span>
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Reshared from{" "}
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<span className="font-medium">@{post.original_author_handle}</span>
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</span>
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</Link>
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) : null}
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{/* Author header — identity on the left, three-dot overflow menu
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on the right (Delete for author, Block/Report for everyone
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else; PostCardMenu hides itself when there are no items). */}
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<header className="flex items-center gap-3 px-4 py-3">
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{post.author_handle ? (
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<Link
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href={`/u/${post.author_handle}`}
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aria-label={`View ${post.author_name || post.author_handle}'s profile`}
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className="shrink-0"
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>
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<UserAvatar
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src={post.author_avatar_url}
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name={post.author_name ?? "Unknown"}
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className="size-9"
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/>
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</Link>
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) : (
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<UserAvatar
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src={post.author_avatar_url}
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name={post.author_name ?? "Unknown"}
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className="size-9"
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/>
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)}
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<div className="min-w-0 flex-1">
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<Link
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href={
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post.author_handle ? `/u/${post.author_handle}` : "#"
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}
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className="block text-sm font-semibold text-foreground truncate hover:underline"
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>
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{post.author_name || "Unknown"}
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</Link>
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<span className="block text-xs text-muted-foreground truncate">
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{post.author_handle ? <>@{post.author_handle} · </> : null}
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{timeAgo(post.created_at)}
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</span>
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</div>
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{enableFollow && post.author_handle && !post.viewer_follows_author ? (
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<FeedFollowButton
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handle={post.author_handle}
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followsYou={!!post.author_follows_viewer}
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requested={!!post.viewer_follow_requested}
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/>
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) : null}
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<PostCardMenu
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post={post}
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onDelete={onDelete}
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onHiddenChange={onHiddenChange}
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/>
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</header>
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{/* Media — image carousel or gradient-with-quote */}
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<div className="relative">
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{hasImages ? (
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<ImageCarousel images={images} onOpen={setLightboxIndex} />
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) : (
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<QuotePanel post={post} />
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)}
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{topRight}
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</div>
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{/* Caption + citation — reference sits directly under the media
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so it's read first, with the action row below it. */}
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<div className="px-4 pt-4 pb-3 space-y-2">
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{hasImages ? (
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// When images carry the visual, the caption sits as text below.
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<Caption
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text={post.caption}
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expanded={expanded}
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onToggle={() => setExpanded((v) => !v)}
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/>
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) : null}
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<Link
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href={sourceHref}
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className="block max-w-full truncate text-[0.7rem] uppercase tracking-[0.2em] font-medium text-muted-foreground hover:text-foreground transition-colors"
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>
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{displaySourceLabel(post.source_url, post.source_title)} →
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</Link>
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</div>
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{/* Action footer — like / comment / reshare on the left, add to
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collection on the right. */}
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<div className="pt-1 pb-2 border-t border-border">
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<PostActionsFooter post={post} />
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</div>
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{onUpdated ? (
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<UpdateBackgroundModal
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open={bgModal}
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onClose={() => setBgModal(false)}
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post={post}
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isMobile={isMobile}
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onUpdated={onUpdated}
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/>
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) : null}
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<MentionsDrawer
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open={mentionsOpen}
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postId={post.id}
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authorId={post.user_id}
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onClose={() => setMentionsOpen(false)}
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onCountChange={(d) => setMentionCount((c) => Math.max(0, c + d))}
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/>
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<PostImageLightbox
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images={images}
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index={lightboxIndex}
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caption={post.caption}
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onIndexChange={setLightboxIndex}
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onClose={() => setLightboxIndex(null)}
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/>
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</article>
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);
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}
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// ─── Pieces ──────────────────────────────────────────────────────────────
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function ImageCarousel({
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images,
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onOpen,
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}: {
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images: PostImage[];
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/** Tapping a slide opens the full-screen viewer at that index. */
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onOpen: (index: number) => void;
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}) {
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const [active, setActive] = useState(0);
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const scrollerRef = useRef<HTMLDivElement>(null);
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// Swiping the carousel and tapping a photo have to stay independent — the
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// strip scrolls natively, and browsers still fire a click after some swipes.
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const { onPointerDown, wasTap } = useTapGuard(scrollerRef);
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function onScroll(e: React.UIEvent<HTMLDivElement>) {
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const el = e.currentTarget;
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const w = el.offsetWidth;
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if (w === 0) return;
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setActive(Math.round(el.scrollLeft / w));
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}
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if (images.length === 1) {
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// Single image: no scroller, so every click is unambiguously a tap.
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return (
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<button
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type="button"
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onClick={() => onOpen(0)}
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aria-label="View photo"
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className="relative block w-full aspect-square bg-muted cursor-pointer outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-inset"
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>
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<Image
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src={images[0].url}
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alt=""
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fill
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sizes="(max-width: 768px) 100vw, 640px"
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className="object-cover"
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unoptimized
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/>
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</button>
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);
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}
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return (
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<div className="relative">
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<div
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ref={scrollerRef}
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onScroll={onScroll}
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className={cn(
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"flex overflow-x-auto snap-x snap-mandatory",
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"[scrollbar-width:none] [&::-webkit-scrollbar]:hidden",
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)}
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>
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{images.map((img, i) => (
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<button
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key={img.id}
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type="button"
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onPointerDown={onPointerDown}
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onClick={(e) => {
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if (!wasTap(e)) return; // that was a swipe — let it scroll
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onOpen(i);
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}}
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aria-roledescription="slide"
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aria-label={`View photo ${i + 1} of ${images.length}`}
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className="relative block w-full shrink-0 snap-start aspect-square bg-muted cursor-pointer outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-inset"
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>
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<Image
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src={img.url}
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alt=""
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fill
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sizes="(max-width: 768px) 100vw, 640px"
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className="object-cover"
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unoptimized
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/>
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</button>
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))}
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</div>
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<div className="absolute inset-x-0 bottom-3 flex items-center justify-center gap-1.5 pointer-events-none">
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{images.map((_, i) => (
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<span
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key={i}
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aria-hidden
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className={cn(
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"size-1.5 rounded-full transition-all",
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i === active ? "bg-white" : "bg-white/50",
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)}
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/>
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))}
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</div>
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</div>
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);
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}
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function QuotePanel({ post }: { post: Post }) {
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// No-image post: the entire square is a flat palette-aware surface
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// (pure white on light themes, palette-specific dark on dark themes)
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// with the quote in serif inside. Text uses --foreground so it inverts
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// automatically with the theme.
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return (
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<div
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className="relative aspect-square overflow-hidden select-none"
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style={quoteCardBgStyle()}
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>
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<div className="absolute inset-0 flex flex-col justify-center items-center p-8 sm:p-10 text-center text-foreground">
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<p className="font-[family-name:var(--font-title)] text-xl sm:text-2xl leading-relaxed max-w-md line-clamp-[8] break-words">
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“{post.caption}”
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</p>
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</div>
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</div>
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);
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}
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function Caption({
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text,
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expanded,
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onToggle,
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}: {
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text: string;
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expanded: boolean;
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onToggle: () => void;
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}) {
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// We clamp to 3 lines collapsed and expose a "More" toggle only when
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// the clamp is actually hiding something. A char-length heuristic gets
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// this wrong: a 200-char caption can fit cleanly in 3 lines on a wide
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// card (no clipping → "More" would be a false promise). Instead measure
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// scrollHeight vs clientHeight on the clamped <p>. Once we've observed
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// overflow we latch it on so "Show less" stays visible after expansion
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// (where scrollHeight would equal clientHeight and we'd otherwise lose
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// the way back).
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const pRef = useRef<HTMLParagraphElement | null>(null);
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const [overflowed, setOverflowed] = useState(false);
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useEffect(() => {
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if (expanded) return;
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const el = pRef.current;
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if (!el) return;
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const measure = () => {
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// Sub-pixel rounding can leave a 1px gap even when content fits;
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// require a real difference before flagging overflow.
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setOverflowed(el.scrollHeight - el.clientHeight > 1);
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};
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measure();
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const ro = new ResizeObserver(measure);
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ro.observe(el);
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return () => ro.disconnect();
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}, [text, expanded]);
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const showToggle = overflowed || expanded;
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return (
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<div className="text-sm text-foreground leading-relaxed">
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<p
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ref={pRef}
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onClick={
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showToggle
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? (e) => {
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e.stopPropagation();
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onToggle();
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}
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: undefined
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}
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className={cn(
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"font-[family-name:var(--font-title)] break-words",
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!expanded && "line-clamp-3",
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showToggle && "cursor-pointer",
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)}
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>
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“{text}”
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</p>
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{showToggle ? (
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<button
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type="button"
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onClick={onToggle}
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className="mt-1 text-xs font-medium text-muted-foreground hover:text-foreground transition-colors"
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>
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{expanded ? "Show less" : "More"}
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</button>
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) : null}
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</div>
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);
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}
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function OwnerButton({
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label,
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onClick,
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icon,
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}: {
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label: string;
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onClick: () => void;
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icon: React.ReactNode;
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}) {
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return (
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<button
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type="button"
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onClick={onClick}
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aria-label={label}
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title={label}
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className={cn(
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"size-9 rounded-full inline-flex items-center justify-center",
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"bg-black/40 text-white hover:bg-black/60 transition-colors backdrop-blur-sm",
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)}
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>
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{icon}
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</button>
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);
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}
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